<?php
namespace esclass;

class Loader
{
	//存放命名空间映射
	protected static $maps = [];
	protected static $instance = [];

	//自己写自动加载函数
	public static function autoload($className)
	{
		
		//完整类名：命名空间名+类名
		//得到命名空间名，根据命名空间名得到其目录路径
		$pos = strpos($className,'\\');//获取出现位置
		
	
		//得到空间名
		$namespace = substr($className, 0, $pos);
		
		
		//得到类名
		$realClass = substr($className, $pos + 1);
		
		$realClass = str_replace('\\',DIRECTORY_SEPARATOR,$realClass);
		//找到文件并包含进来
		self::mapLoad($namespace, $realClass);
	}
	
	//根据命名空间名得到目录路径
	protected static function mapLoad($namespace,$realClass)
	{
		
		
		if (array_key_exists($namespace,self::$maps)) {
			$namespace = self::$maps[$namespace];
		}
		
		//处理路径
	    $namespace = rtrim(str_replace('\\',DIRECTORY_SEPARATOR,$namespace),'\\');
		
		
		//拼接文件全路径
		$filePath = $namespace.$realClass.'.php';
		
		//引入文件
		if (file_exists($filePath)) {
			include $filePath;
		}else{
			
			return false;
			//die($namespace.$realClass.'类不存在');
		}
	}
	
	//提供命名空间和路径，保存至映射数组中
	public static  function addMaps($namespace,$path)
	{
		
        //array_key_exists() 函数检查某个数组中是否存在指定的键名，如果键名存在则返回 true，如果键名不存在则返回 false。
		if (array_key_exists($namespace, self::$maps)) {
			die('此命名空间以映射过');
		}
	
		//将命名空间和路径以键值对形式存放到数组中
		self::$maps[$namespace] = $path;

	}
	// 注册自动加载机制
	public static function register()
	{
		
		
		
		spl_autoload_register('\\esclass\\Loader::autoload', true, true);
		
		
		self::addMaps('app', APP_PATH);
		
		self::addMaps('esclass', __CORE__ . 'classes/');

		self::addMaps('extend', ROOT_PATH . 'extend/');
		
		
		self::loadfunction();
		self::basedefined();
		
		self::InitHook();
	}
	public static  function loadfunction(){
	
		
		$files = glob(__ROOT__.'esphp/functions/*.php');
		
	
		foreach($files as $file){
		
			include_once $file;
			
		}
	
		
		include_once APP_PATH.'common.func.php';
	
		
	}
	public static  function basedefined(){
		define('RESULT_SUCCESS' , 'success');
		define('RESULT_ERROR'   , 'error');
		define('RESULT_REDIRECT', 'redirect');
		define('RESULT_MESSAGE' , 'message');
		define('RESULT_URL'     , 'url');
		define('RESULT_DATA'    , 'data');
		define('API_CODE_NAME'          , 'code');
		define('API_MSG_NAME'           , 'msg');
		
		define('DATA_STATUS_NAME'       , 'status');
		define('DATA_COMMON_STATUS' ,  'status');
		define('DATA_NORMAL'        ,  1);
		define('DATA_DISABLE'       ,  0);
		define('DATA_DELETE'        , -1);
		define('DATA_SUCCESS'       , 1);
		define('DATA_ERROR'         , 0);
		
		define('TIME_CT_NAME' ,  'create_time');
		define('TIME_UT_NAME' ,  'update_time');
		define('TIME_NOW'     ,   time());
		
		define('SYS_APP_NAMESPACE'              , config('','app_namespace'));
		define('SYS_HOOK_DIR_NAME'              , 'hook');
		define('SYS_ADDON_DIR_NAME'             , 'addon');
		define('SYS_COMMON_DIR_NAME'            , 'common');
		
		define('SYS_DRIVER_DIR_NAME'            , 'driver');
		define('SYS_STATIC_DIR_NAME'            , 'static');
		
		define('SYS_VERSION'                    , webconfig('SYS_VERSION'));
		define('SYS_ADMINISTRATOR_ID'           , 1);
		define('SYS_DSS'                        , '/');
		define('SYS_DS_PROS'            , '/');
		define('SYS_DS_CONS'                    , '\\');
		define('SYS_ENCRYPT_KEY'                , '}a!vI9wX>l2V|gfZp{8`;jzR~6Y1_p-e,#"MN=e:');
		
		define('LAYER_LOGIC_NAME'     , 'logic');
		define('LAYER_MODEL_NAME'     , 'model');
		define('LAYER_SERVICE_NAME'   , 'service');
		define('LAYER_CONTROLLER_NAME', 'controller');
		
		
		define('WEB_URL', detect_site_url());
		define('WEB_PATH_UPLOAD'    , WEB_URL .SYS_DSS. 'uploads'    . SYS_DSS);
		define('WEB_PATH_PICTURE'   , WEB_PATH_UPLOAD . 'picture'   . SYS_DSS);
		define('WEB_PATH_FILE'      , WEB_PATH_UPLOAD . 'file'      . SYS_DSS);
		
		define('PATH_ADDON'     , ROOT_PATH   . SYS_ADDON_DIR_NAME . '/');
		define('PATH_PUBLIC'    , ROOT_PATH   . 'public'    . DS);
		define('PATH_UPLOAD'    , ROOT_PATH . 'uploads'    . DS);
		define('PATH_PICTURE'   , PATH_UPLOAD . 'picture'   . DS);
		define('PATH_FILE'      , PATH_UPLOAD . 'file'      . DS);
		define('PATH_SERVICE'   , ROOT_PATH   . DS . SYS_APP_NAMESPACE . DS . SYS_COMMON_DIR_NAME . DS . LAYER_SERVICE_NAME . DS);
		
		// 注册插件根命名空间
		self::addMaps(SYS_ADDON_DIR_NAME, PATH_ADDON);
		
		$api_key                    = webconfig('api_key');
		$jwt_key                    = webconfig('jwt_key');
		 
		empty($api_key)&&$api_key = 'ESPHP' ;
		empty($jwt_key)&&$jwt_key = 'ESPHP' ;
		
		define('API_KEY', $api_key);
		define('JWT_KEY' , $jwt_key );
		
		
	
		
			$database_config = config('database');
		
			$list_rows = webconfig('list_rows');
		
			define('DB_PREFIX', $database_config['prefix']);
		
			empty($list_rows) ? define('DB_LIST_ROWS', 10) : define('DB_LIST_ROWS', $list_rows);
		
	}
	/**
	 * 初始化插件静态资源
	 */
	private static function initAddonStatic()
	{
	
		$regex = '/[^\s]+\.(jpg|gif|png|bmp|js|css)/i';
	
		$url = htmlspecialchars(addslashes(Request::instance()->url()));
	
		if(strpos($url, SYS_ADDON_DIR_NAME) !== false && preg_match($regex, $url)) :
	
		$url = PATH_ADDON . str_replace(SYS_DSS, DS, substr($url, strlen(SYS_DSS . SYS_ADDON_DIR_NAME . SYS_DSS)));
	
		!is_file($url) && exit('plugin resources do not exist.');
	
		$ext = pathinfo($url, PATHINFO_EXTENSION);
	
		$header = 'Content-Type:';
	
		in_array($ext, ['jpg','gif','png','bmp']) && $header .= "image/jpeg;text/html;";
	
		switch ($ext)
		{
			case 'css': $header .= "text/css;"; break;
			case 'js' : $header .= "application/x-javascript;"; break;
		}
	
		$header .= "charset=utf-8";
	
		header($header);
	
		exit(file_get_contents($url));
	
		endif;
	}
	/**
	 * 行为入口
	 */
	private static function InitHook()
	{
	
	
	
		$hook_list = database::getInstance()->table('hook')->column('name,addon_list');
		
		foreach ($hook_list as $k => $v)
		{
			
			if (!empty($v)):
			
			$where[DATA_COMMON_STATUS] = DATA_NORMAL;
			$name_list = explode(',', $v);	
			$where['name'] = $name_list;
			
			$data = database::getInstance()->table('addon')->where($where)->column('id,name');
			
			
			
			!empty($data) && Hook::add($k, array_map('get_addon_class', array_intersect($name_list, $data)));
	
			endif;
		}
		
	}
	/**
	 * 字符串命名风格转换
	 * type 0 将Java风格转换为C的风格 1 将C风格转换为Java的风格
	 * @param string  $name 字符串
	 * @param integer $type 转换类型
	 * @param bool    $ucfirst 首字母是否大写（驼峰规则）
	 * @return string
	 */
	public static function parseName($name, $type = 0, $ucfirst = true)
	{
		if ($type) {
			$name = preg_replace_callback('/_([a-zA-Z])/', function ($match) {
				return strtoupper($match[1]);
			}, $name);
			return $ucfirst ? ucfirst($name) : lcfirst($name);
		} else {
			return strtolower(trim(preg_replace("/[A-Z]/", "_\\0", $name), "_"));
		}
	}
	/**
	 * 解析URL的pathinfo参数和变量
	 * @access private
	 * @param string    $url URL地址
	 * @return array
	 */
	private static function parseUrlPath($url,$config=[])
	{
		$url = trim($url, '/');
		$var = [];
		//分两种，参数url和带“/”的
	
		
		if(strpos($url,'?')!==false&&strpos($url,'.'.$config['view_suffix'])===false){
				$info = parse_url($url);
				
			$info['query']=str_replace('?', '&', $info['query']);
			
			parse_str($info['query'], $newpath);
			
		}else{
			$url=str_replace('.'.$config['view_suffix'], '', $url);
			$url=str_replace(array('?','=','&'), '/', $url);
			
			
			
			// [模块/控制器/操作]
			$path = explode('/', $url);
				
			$controller = !empty($path) ? array_shift($path) : null;
			// 解析操作
			$action = !empty($path) ? array_shift($path) : null;
			
				
			preg_replace_callback('/(\w+)\|([^\|]+)/', function ($match) use (&$var) {
				$var[$match[1]] = strip_tags($match[2]);
			},  implode('|', $path));
			
			$newpath = array_merge(array('c'=>$controller,'a'=>$action),$var);
			
		}

		
		
		$var = array_slice($newpath,2);
		$path =array_slice($newpath,0,2);
		
		return [$path,$var];
	}
	/**
	 * 调用反射执行类的方法 支持参数绑定
	 * @access public
	 * @param string|array $method 方法
	 * @param array        $vars   变量
	 * @return mixed
	 */
	public static function invokeMethod($method, $vars = [])
	{
		
		
		if (is_array($method)) {
			$class   = is_object($method[0]) ? $method[0] : self::invokeClass($method[0]);
			
			$reflect = new \ReflectionMethod($class, $method[1]);
			 
		} else {
			// 静态方法
			$reflect = new \ReflectionMethod($method);
		}
		$args = self::bindParams($reflect, $vars);
		
		return $reflect->invokeArgs(isset($class) ? $class : null, $args);
	}

	/**
	 * 调用反射执行类的实例化 支持依赖注入
	 * @access public
	 * @param string    $class 类名
	 * @param array     $vars  变量
	 * @return mixed
	 */
	public static function invokeClass($class, $vars = [])
	{
		 
		$reflect     = new \ReflectionClass($class);
		$constructor = $reflect->getConstructor();
	
	
	
		if ($constructor) {
			$args = self::bindParams($constructor, $vars);
			
		} else {
			$args = [];
		}
		
		return $reflect->newInstanceArgs($args);
	}
	
	/**
	 * 绑定参数
	 * @access private
	 * @param \ReflectionMethod|\ReflectionFunction $reflect 反射类
	 * @param array                                 $vars    变量
	 * @return array
	 */
	private static function bindParams($reflect, $vars = [])
	{
		 
		if (empty($vars)) {

				$vars = Request::instance()->param();
		
			 
		}
		$args = [];
		if ($reflect->getNumberOfParameters() > 0) {
			
			// 判断数组类型 数字数组时按顺序绑定参数
			reset($vars);
			$type   = key($vars) === 0 ? 1 : 0;
			$params = $reflect->getParameters();
			
			foreach ($params as $param) {
				$args[] = self::getParamValue($param, $vars, $type);
			}
		}
		
		return $args;
	}
	
	/**
	 * 获取参数值
	 * @access private
	 * @param \ReflectionParameter  $param
	 * @param array                 $vars    变量
	 * @param string                $type
	 * @return array
	 */
	private static function getParamValue($param, &$vars, $type)
	{
		$name  = $param->getName();
		
		$class = $param->getClass();
		
		if ($class) {
			$className = $class->getName();
			$bind      = Request::instance()->$name;
			if ($bind instanceof $className) {
				$result = $bind;
			} else {
				if (method_exists($className, 'invoke')) {
					$method = new \ReflectionMethod($className, 'invoke');
					if ($method->isPublic() && $method->isStatic()) {
						return $className::invoke(Request::instance());
					}
				}
				$result = method_exists($className, 'instance') ? $className::instance() : new $className;
			}
		} elseif (1 == $type && !empty($vars)) {
			$result = array_shift($vars);
		} elseif (0 == $type && isset($vars[$name])) {
			$result = $vars[$name];
		} elseif ($param->isDefaultValueAvailable()) {
			$result = $param->getDefaultValue();
		} else {
			throw new \InvalidArgumentException('method param miss:' . $name);
		}
		return $result;
	}
	public static function run(Request $request=null)
	{
		is_null($request) && $request = Request::instance();
		
		if (defined('BIND_MODULE')) {
			
			$module = BIND_MODULE;
		}else{
			$name = pathinfo($request->baseFile(), PATHINFO_FILENAME);//获取模块名称
			
			$module = $name;
		}
		
		
		
		$path = $request ->url();
		
		$path   = explode($_SERVER['SCRIPT_NAME'], $path);
		
		$config =config();
		
		$module_config = load_config(APP_PATH.DS.$module.'/config.php');
		
		$config = array_merge($config,$module_config);
		
		
		if(!isset($path[1])||$path[1]==''){
			
			if($module=='admin'){
				$path =array(
						'c'=>config('config.default_controller'),
						'a'=>'adminindex',
				);
			}else{
				$path =array(
						'c'=>config('config.default_controller'),
						'a'=>config('config.default_action'),
				);
			}
			
			
			$var = array();
		}else{
			
/* 			if(strpos($path[1], '.'.$config['view_suffix'])){
				
				$parseUrlpath = explode('.'.$config['view_suffix'], $path[1]);
				
				$parseUrlpath = $parseUrlpath[0];
				
			}else{
				$parseUrlpath =$path[1];
			} */
			
			list($path,$var) = self::parseUrlpath($path[1],$config);
		}
		$request->route($var);
		if(empty($path['c'])){
			if($module=='admin'){
				$path['c']=config('config.default_controller');
						
			
			}else{
				$path['c']=config('config.default_controller');
			}
		}
		if(empty($path['a'])){
			if($module=='admin'){
				$path['a']='adminindex';
				
			}else{
				$path['a']=config('config.default_action');
			}
		}
	
		//得到了路径地址和参数列表数组
		$route = [$module, $path['c'], $path['a']];
		
		// 记录当前调度信息
		$request->dispatch(['type' => 'module', 'module' => $route]);
		$request->controller($path['c']);
		$request->action($path['a']);
		$request->module($module);
	
		$class = 'app\\'.$module.'\\controller\\'.ucfirst($path['c']);//命名空间类名
		
		if (class_exists($class)) {
			
			$instance =self::invokeClass($class);
			
			
		}
		
		$action = $path['a'];
		
		
		
		if (is_callable([$instance, $action])) {
			// 执行操作方法
			
			$call = [$instance, $action];
			
			
			
		} elseif (is_callable([$instance, '_empty'])) {
			// 空操作
			$call = [$instance, '_empty'];
			$vars = [$action];
		} else {
			// 操作不存在
			throw new EsException('操作方法不存在');
		}
		
		return self::invokeMethod($call, $var);

	}

	/**
	 * 实例化验证类 格式：[模块名/]验证器名
	 * @param string $name         资源地址
	 * @param string $layer        验证层名称
	 * @param bool   $appendSuffix 是否添加类名后缀
	 * @param string $common       公共模块名
	 * @return Object|false
	 * @throws ClassNotFoundException
	 */
	public static function validate($name = '', $layer = 'validate', $appendSuffix = false, $common = 'common')
	{
		$name = $name ?: config('config.default_validate');
		if (empty($name)) {
			return new Validate;
		}
		$name = ucfirst($name);
		$guid = $name . $layer;
		if (isset(self::$instance[$guid])) {
			return self::$instance[$guid];
		}
		if (false !== strpos($name, '\\')) {
			$class  = $name;
			$module = Request::instance()->module();
		} else {
			if (strpos($name, '/')) {
				list($module, $name) = explode('/', $name);
			} else {
				$module = Request::instance()->module();
			}
			$class = '\\app\\'.$module.'\\'. $layer.'\\'.$name;
		}
		
		if (class_exists($class)) {
			$validate = new $class;
		} else {
			
			$class = str_replace('\\' . $module . '\\', '\\' . $common . '\\', $class);
			
			if (class_exists($class)) {
				$validate = new $class;
			} else {
				throw new \Exception('class not exists:' . $class);
			}
		}
		self::$instance[$guid] = $validate;
		return $validate;
	}
}
